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Reference.org
TAPS (buffer)
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<p>TAPS is a chemical compound commonly used to make <a href="/facts/Buffer_solution/zrLz9eaa">buffer solutions</a>. </p><p>It can bind <a href="/facts/Divalent/ck7cHByj">divalent</a> <a href="/facts/Ion/3bePpDna">cations</a>, including <a href="/facts/Cobalt/gqhScEw4">Co(II)</a> and <a href="/facts/Nickel/KwMCHYRP">Ni(II)</a>. </p><p>TAPS is effective to make buffer solutions in the <a href="/facts/PH/RnSv8D7y">pH range</a> 7.7–9.1, since it has a <a href="/facts/Acid_dissociation_constant/t4YyRtKC">p<i>K</i>a</a> value of 8.44 (<a href="/facts/Ionic_strength/72GKfhmE">ionic strength</a> I = 0, 25 °C). </p><p>The pH (and p<i>K</i>a at I ≠ 0) of the buffer solution changes with concentration and temperature, and this effect may be predicted e.g. using online calculators. </p>